The main research works can be described as follows : 1 . considering the randomness of physics parameters of structural material , geometric dimensions of active bars and passive bars of the piezoelectric intelligent truss structure simultaneously , the analytic model of the structural dynamic characteristics are built based on the random factor method ( rfm ) 主要内容如下： 1 、考虑压电智能桁架结构主动杆单元及被动杆单元物理参数、几何参数同时具有随机性，基于随机因子法，构建了结构动力特性分析模型，提出求解方法，推导出结构动力特性随机变量的数字特征计算表达式。
The results of this thesis come from getting a good outcome by applying the quantity characteristic to building and evaluation of network . it made a good preparation to the research of building a index system of quantitative analysis of outside or inner relationship between industrial enterprise and macro - economic system 本文主要成果在于引入了从网络的数字特征去规划网络和评价网络的原理和方法，并取得了良好的结果，而为研究建立航空工业企业，市场与宏观经济系统内外关系的定量分析评价指标体系作出准备。
Abstract : in order to provide the reasonable parameters in the reliability analysis of tunnel structure and the criterion in the quality control of tunnel engineering , in this paper , the over - under - excavated values of the real - state outline of tunnel excavation are obtained by the near - field photographic method . by using mathematical statistic method , the figure features and probability distributions of the over - under - excavated values of the surrounding rock , including deferent positions of same cross section , are analyzed 文摘:采用近景摄影的方法，从隧道开挖毛洞中获取围岩超欠挖数据，通过数理统计的方法，分析各类围岩超欠挖的数字特征及概率分布，同时得出各类围岩超欠挖在隧道断面不同部位的分布规律，为隧道结构的可靠度研究提供可靠参数，也为隧道工程质量控制提供基准
